Thank you so much for the replies. :)
We do not really have a garden, except where we plant veggies, so all natives are allowed to go where they may. At least at this point. So far, these petunias are out back in our prairie patch. I have several aggressive species in hopes they will overwhelm the non-native grasses that are already here.
We have some lawn, but that is only because we do not really want ticks near the house and the children are concerned when I talk about increasing another native patch, encroaching on their play space. But then they go play in the Giant Ragweed out in the pasture. I am sure they could live without a lawn.
